Now showing items 414-433 of 806

  • Long-term forest soil warming alters microbial communities in temperate forest soils 

    DeAngelis, Kristen M.; Pold, Grace; Topcuoglu, Begum D.; van Diepen, Linda T. A.; Varney, Rebecca M.; Blanchard, Jeffrey L.; Melillo, Jerry M.; Frey, Serita D. (Frontiers Media, 2015-02-13)
    Soil microbes are major drivers of soil carbon cycling, yet we lack an understanding of how climate warming will affect microbial communities. Three ongoing field studies at the Harvard Forest Long-term Ecological Research ...
  • Long-term studies of the marine ecosystem along the west Antarctic Peninsula 

    Ducklow, Hugh W. (2008-06-27)
    Articles in this volume focus on longer-term studies of the marine ecosystem of the continental shelf west of the Antarctic Peninsula, principally by the Palmer, Antarctica Long- Term Ecological Research project (Ross ...
  • Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska 

    Buzby, Karen M.; Deegan, Linda A. (National Research Council Canada, 2004-12-23)
    In many long-lived species such as Arctic grayling (Thymallus arcticus), population growth rate is most sensitive to changes in adult survival probabilities. Understanding the factors that regulate adult survival in this ...
  • Looking deeper into the soil : biophysical controls and seasonal lags of soil CO2 production and efflux 

    Vargas, Rodrigo; Baldocchi, Dennis D.; Allen, Michael F.; Bahn, Michael; Black, T. Andrew; Collins, Scott L.; Yuste, Jorge Curiel; Hirano, Takashi; Jassal, Rachhpal S.; Pumpanen, Jukka; Tang, Jianwu (Ecological Society of America, 2010-09)
    We seek to understand how biophysical factors such as soil temperature (Ts), soil moisture (θ), and gross primary production (GPP) influence CO2 fluxes across terrestrial ecosystems. Recent advancements in automated ...
  • Low-dose arsenic compromises the immune response to influenza A infection in vivo 

    Kozul, Courtney D.; Ely, Kenneth H.; Enelow, Richard I.; Hamilton, Joshua W. (National Institute of Environmental Health Sciences, 2009-05-20)
    Arsenic exposure is a significant worldwide environmental health concern. We recently reported that 5-week exposure to environmentally relevant levels (10 and 100 ppb) of As in drinking water significantly altered components ...
  • Macroalgal responses to experimental nutrient enrichment in shallow coastal waters : growth, internal nutrient pools, and isotopic signatures 

    Teichberg, Mirta; Fox, Sophia E.; Aguila, Carolina; Olsen, Ylva S.; Valiela, Ivan (Inter-Research, 2008-09-25)
    Increased nutrient inputs to temperate coastal waters have led to increased occurrences of macroalgal blooms worldwide. To identify nutrients that are limiting to macroalgae and to determine whether different forms of these ...
  • Macrophyte abundance in Waquoit Bay : effects of land-derived nitrogen loads on seasonal and multi-year biomass patterns 

    Fox, Sophia E.; Stieve, Erica; Valiela, Ivan; Hauxwell, Jennifer; McClelland, James W. (2008-01)
    Anthropogenic inputs of nutrients to coastal waters have rapidly restructured coastal ecosystems. To examine the response of macrophyte communities to land-derived nitrogen loading, we measured macrophyte biomass monthly ...
  • Macrophytes as indicators of land-derived wastewater : application of a δ15N method in aquatic systems 

    Cole, Marci L.; Kroeger, Kevin D.; McClelland, James W.; Valiela, Ivan (American Geophysical Union, 2005-01-25)
    We measured δ15N signatures of macrophytes and particulate organic matter (POM) in six estuaries and three freshwater ponds of Massachusetts to assess whether the signatures could be used as indicators of the magnitude of ...
  • Maloriented bivalents have metaphase positions at the spindle equator with more kinetochore microtubules to one pole than to the other 

    LaFountain, James R.; Oldenbourg, Rudolf (American Society for Cell Biology, 2004-09-22)
    To test the "traction fiber" model for metaphase positioning of bivalents during meiosis, kinetochore fibers of maloriented bivalents, induced during recovery from cold arrest, were analyzed with a liquid crystal polarizing ...
  • Mammalian end binding proteins control persistent microtubule growth 

    Komarova, Yulia A.; De Groot, Christian O.; Grigoriev, Ilya; Gouveia, Susana Montenegro; Munteanu, E. Laura; Schober, Joseph M.; Honnappa, Srinivas; Buey, Ruben M.; Hoogenraad, Casper C.; Dogterom, Marileen; Borisy, Gary G.; Steinmetz, Michel O.; Akhmanova, Anna (Rockefeller University Press, 2009-03-02)
    End binding proteins (EBs) are highly conserved core components of microtubule plus-end tracking protein networks. Here we investigated the roles of the three mammalian EBs in controlling microtubule dynamics and analyzed ...
  • Mapping the biosphere : exploring species to understand the origin, organization and sustainability of biodiversity 

    Wheeler, Q. D.; Knapp, Sandra; Stevenson, D. W.; Stevenson, J.; Blum, Stan D.; Boom, B.. M.; Borisy, Gary G.; Buizer, J. L.; De Carvalho, M. R.; Cibrian, A.; Donoghue, M. J.; Doyle, V.; Gerson, E. M.; Graham, C. H.; Graves, P.; Graves, Sara J.; Guralnick, Robert P.; Hamilton, A. L.; Hanken, J.; Law, W.; Lipscomb, D. L.; Lovejoy, T. E.; Miller, Holly; Miller, J. S.; Naeem, Shahid; Novacek, M. J.; Page, L. M.; Platnick, N. I.; Porter-Morgan, H.; Raven, P. H.; Solis, M. A.; Valdecasas, A. G.; Van Der Leeuw, S.; Vasco, A.; Vermeulen, N.; Vogel, J.; Walls, R. L.; Wilson, E. O.; Woolley, J. B. (Taylor & Francis, 2012-03-27)
    The time is ripe for a comprehensive mission to explore and document Earth's species. This calls for a campaign to educate and inspire the next generation of professional and citizen species explorers, investments in ...
  • Marine bacterial, archaeal and eukaryotic diversity and community structure on the continental shelf of the western Antarctic Peninsula 

    Luria, Catherine M.; Ducklow, Hugh W.; Amaral-Zettler, Linda A. (Inter-Research, 2014-10-02)
    The classic view of polar ocean foodwebs emphasizes large predators sustained by energy and material flow through short, efficient diatom-krill-predator food chains. Bacterial activity is generally low in cold polar waters ...
  • The Marine Microbial Eukaryote Transcriptome Sequencing Project (MMETSP) : illuminating the functional diversity of eukaryotic life in the oceans through transcriptome sequencing 

    Keeling, Patrick J.; Burki, Fabien; Wilcox, Heather M.; Allam, Bassem; Allen, Eric E.; Amaral-Zettler, Linda A.; Armbrust, E. Virginia; Archibald, John M.; Bharti, Arvind K.; Bell, Callum J.; Beszteri, Bank; Bidle, Kay D.; Cameron, Connor T.; Campbell, Lisa; Caron, David A.; Cattolico, Rose Ann; Collier, Jackie L.; Coyne, Kathryn J.; Davy, Simon K.; Deschamps, Phillipe; Dyhrman, Sonya T.; Edvardsen, Bente; Gates, Ruth D.; Gobler, Christopher J.; Greenwood, Spencer J.; Guida, Stephanie M.; Jacobi, Jennifer L.; Jakobsen, Kjetill S.; James, Erick R.; Jenkins, Bethany D.; John, Uwe; Johnson, Matthew D.; Juhl, Andrew R.; Kamp, Anja; Katz, Laura A.; Kiene, Ronald P.; Kudryavtsev, Alexander N.; Leander, Brian S.; Lin, Senjie; Lovejoy, Connie; Lynn, Denis; Marchetti, Adrian; McManus, George; Nedelcu, Aurora M.; Menden-Deuer, Susanne; Miceli, Cristina; Mock, Thomas; Montresor, Marina; Moran, Mary Ann; Murray, Shauna A.; Nadathur, Govind; Nagai, Satoshi; Ngam, Peter B.; Palenik, Brian; Pawlowski, Jan; Petroni, Giulio; Piganeau, Gwenael; Posewitz, Matthew C.; Rengefors, Karin; Romano, Giovanna; Rumpho, Mary E.; Rynearson, Tatiana A.; Schilling, Kelly B.; Schroeder, Declan C.; Simpson, Alastair G. B.; Slamovits, Claudio H.; Smith, David R.; Smith, G. Jason; Smith, Sarah R.; Sosik, Heidi M.; Stief, Peter; Theriot, Edward; Twary, Scott N.; Umale, Pooja E.; Vaulot, Daniel; Wawrik, Boris; Wheeler, Glen L.; Wilson, William H.; Xu, Yan; Zingone, Adriana; Worden, Alexandra Z. (Public Library of Science, 2014-06-24)
    Microbial ecology is plagued by problems of an abstract nature. Cell sizes are so small and population sizes so large that both are virtually incomprehensible. Niches are so far from our everyday experience as to make their ...
  • Marking 100 years since Rudolf Höber’s discovery of the insulating envelope surrounding cells and of the beta-dispersion exhibited by tissue 

    Pethig, Ronald; Schmueser, Ilka (Oslo Bioimpedance Group, 2012-11-23)
    Between 1910 and 1913 Rudolf Höber presented proof that the interiors of red blood cells and muscle cells contain conducting electrolytes, and that each conducting core is contained within an insulating membrane. He did ...
  • Massive multiplication of genome and ribosomes in dormant cells (akinetes) of Aphanizomenon ovalisporum (Cyanobacteria) 

    Sukenik, Assaf; Kaplan-Levy, Ruth N.; Mark Welch, Jessica L.; Post, Anton F. (2011-08)
    Akinetes are dormancy cells commonly found among filamentous cyanobacteria, many of which are toxic and/or nuisance, bloom-forming species. Development of akinetes from vegetative cells is a process that involves morphological ...
  • Massively parallel tag sequencing reveals the complexity of anaerobic marine protistan communities 

    Stoeck, Thorsten; Behnke, Anke; Christen, Richard; Amaral-Zettler, Linda A.; Rodriguez-Mora, Maria J.; Chistoserdov, Andrei Y.; Orsi, William D.; Edgcomb, Virginia P. (BioMed Central, 2009-11-03)
    Recent advances in sequencing strategies make possible unprecedented depth and scale of sampling for molecular detection of microbial diversity. Two major paradigm-shifting discoveries include the detection of bacterial ...
  • The mate recognition protein gene mediates reproductive isolation and speciation in the Brachionus plicatilis cryptic species complex 

    Gribble, Kristin E.; Mark Welch, David B. (BioMed Central, 2012-08-01)
    Chemically mediated prezygotic barriers to reproduction likely play an important role in speciation. In facultatively sexual monogonont rotifers from the Brachionus plicatilis cryptic species complex, mate recognition of ...
  • Maternal caloric restriction partially rescues the deleterious effects of advanced maternal age on offspring 

    Gribble, Kristin E.; Jarvis, George; Bock, Martha; Mark Welch, David B. (Anatomical Society and John Wiley & Sons, 2014-03-24)
    While many studies have focused on the detrimental effects of advanced maternal age and harmful prenatal environments on progeny, little is known about the role of beneficial non-Mendelian maternal inheritance on aging. ...
  • Mechanical land clearing to promote establishment of coastal sandplain grassland and shrubland communities 

    Lezberg, Ann L.; Buresch, Kendra C.; Neill, Christopher; Chase, Tom (2005-07-22)
    The decline in grasslands and other species-rich early-successional habitats on the coastal sandplains of the northeastern U.S. has spurred management to increase the area of these declining plant communities. We mechanically ...
  • Meeting report : GBIF hackathon-workshop on Darwin Core and sample data (22-24 May 2013) 

    Wieczorek, John; Banki, Olaf; Blum, Stan D.; Deck, John; Doring, Markus; Droge, Gabriele; Endresen, Dag; Goldstein, Philip; Leary, Patrick R.; Krishtalka, Leonard; O'Tuama, Eamonn; Robbins, Robert J.; Robertson, Tim; Yilmaz, Pelin (Genomic Standards Consortium, 2014)
    The workshop-hackathon was convened by the Global Biodiversity Information Facility (GBIF) at its secretariat in Copenhagen over 22-24 May 2013 with additional support from several projects (RCN4GSC, EAGER, VertNet, BiSciCol, ...